Milo tore up the "More" card. He didn't want to get greedy. The pieces turned to dust and blew away. At sunset he paid back his one borrowed day with a quiet Wednesday, and the librarian nodded. "You learned the most important rule," she said. "Borrow little. Live the rest."

Milo whispered "more," and the card pulled three extra perfect days from his future all at once. They were wonderful. But then his calendar jumped ahead, and he'd missed his own birthday and two weekends with friends. The good days had cost his favorite days. He learned his lesson the hard way.